Postel's law
English
Alternative forms
- Postel's Law
Etymology
Named after Internet pioneer Jon Postel (1943–1998).
Proper noun
- (software engineering) The design principle that software should be conservative as to its own behaviour (i.e. strictly compliant with specifications) but liberal in the behaviour it tolerates from other systems.
- 2005, Jesse Liberty, Visual C# 2005: A Developer's Notebook, O'Reilly Media, →ISBN, page 47:
- Contravariance is consistent with Postel's Law: “Be liberal in what you accept, and conservative in what you send.”
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